Seiko Cal. 6668 - 730

This Spring Drive model from 1969 features a 45mm Two-Tone case. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-bea7efadfdb4]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1969

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